I'm trying to create a Facebook application for using the login with Facebook plugin for OSClass. I tried to add the domain in the following ways: https://www.example.com , http://www.example.com , www.example.com , all of them triggers the following error message (translated from spanish)
The application domains must match with the URL domains of Facebook games (https), URL for mobile websites, Unity binary URL, website URL or secure URL of the Facebook page tab. Fix the following domains : www.example.com
Someone mentioned elsewhere to validate that the website it's yours. Is this true? I dont recall doing this in the past with Facebook apps. What else can be wrong here?